This machine is our very own, which decided to stop drying clothes. Everything seemed to work; the drum was going around, the timer was working and nothing sounded out of sorts, but it started taking longer and longer to dry clothes. In short, it wasn’t well.
This particular model is well documented online as it’s the same one with a world-wide model recall. Fortunately, Hotpoint/ Indesit/ Creda/ Ariston have an excellent recall process and information service. In fact if you’re concerned about yours, please visit http://www.hotpointservice.co.uk/safety-notices/ to see if your machine is listed. This machine had been modified and was cleared safe for use.
Anyway, it was time to dig out the tools. There’s not much to a tumble dryer really, the most expensive and important part being the motor, which in this case was fine. Having tested the heating elements for suitable resistance, it was time to check the wiring, which also tested fine.
Since the machine would heat up and then cool, it suggested a temperature control system fault. This machine has three temperature sensors; one in the exhaust and two on the back of the heater, the latter two to act as heat control and safety cut out.
If you’re still reading, it turned out that the exhaust thermostat sensor was at fault. Once it has allowed a brief heat cycle, it would shut down for ages. It had excess temperature switch ‘hysteresis’. The spare part was about £12, so versus the cost of a replacement machine at about £170, it was well worth spending time on the machine.
This Kenwood Chef developed a nasty little problem. The failure smelled expensive and the Chef even puffed out some smoke when it began to fail, it would operate, but noisily and badly, so it to the workshop it had to go.
It was in decent overall condition and has loads of accessories, so definitely worth saving since a new one is over £300 new.
Since the speed control circuitry is a common failure on models of this age, it seemed sensible to start there. On this unit, access wasn’t a problem and the issue was quickly diagnosed. Both capacitors had failed (spectacularly) and one of the resistors had become weak by about 20 Ohms or so. Repair kits are readily available online for those who are willing to save these excellent machines, so after removing the faulty components, new items were fitted.
Another little annoying problem with the Chef, was the main drive belt. It was intermittently rubbing the main plastic body of the unit, making a horrible sound and melting some of the casing (only cosmetic). The motor mounting spacer had compressed on one side causing the belt to not run correctly. This was fixed with a small washer to correct the belt’s alignment.
With a little bit of grease, WD40, Brasso, contact cleaner, repair kit and washer, the whole job took a couple of hours (including fettling time) and cost me under £8. Definitely worth the effort considering the price of a replacement Chef.
Here’s a picture of the new components fitted in situ…
I occasionally volunteer at Repair Café and similar events in Sussex and surrounding area
I love repairing things and hate throwing things away that can be saved. There’s far too much waste in the world. Many things that can sometimes appear unrepairable, are indeed repairable, with a little tinkering.
I want to encourage people who doubt their own ability to repair their things, to give repair a go. Afterall, if ‘that thing’ isn’t working, grab a screwdriver, take it apart and investigate. What have you got to lose?
I’ve been tinkering with bikes, cars, coffee machines, toys and vacuum cleaners and pretty much anything that can be dismantled since I could hold a screwdriver. I’ve worked for BT as a senior engineer and I’ve studied design, business and electronics.
Enjoy the repair diary of a tinkerer. I hope it gives you a nudge to repair your broken thing.